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Finding the Fourth Proportional to 529,691.91, 730,989.26 and 287,990.75

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Solution

The fourth proportional to 529,691.91, 730,989.26 and 287,990.75 is: 397,435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,691.91 : 730,989.26 = 287,990.75 : x
  2. Step 2: Convert to fraction form
    529,691.91/730,989.26 = 287,990.75/x
  3. Step 3: Cross multiply
    529,691.91x = 730,989.26 × 287,990.75
  4. Step 4: Simplify right side
    529,691.91x = 210,518,145,229.35
  5. Step 5: Solve for x
    x = 210,518,145,229.35/529,691.91
  6. Step 6: Final answer
    x = 397,435.08

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